We selected the 4-night cruise to Cozumel as it fit in nicely between two other planned vacation stops with family. It was our first visit to Cozumel and the thought of 2 days at sea on such a large ship was appealing.
First, our embarkation process was very crowded but it seemed to flow pretty efficiently for the number of people who were there. We arrived at the port about 12:30 for a 1:30 embarkation. It felt like 60% of the ship did the same thing. Despite some computer problems on RCCL's end, we were able to complete all of our pre-cruise reservations online, which expedited the process. (They had "server" problems for 2 days.)
The Liberty of the Seas is a beautiful ship. We enjoyed all of the amenities of the large ship. We are comfortable walking the distance of the ship many times a day and climbing a few stairs so we got around quite well. The layout of the ship was pretty logical except that deck 3 is cut in half and we often needed to go up a level to get to the other half of deck 3. Overall, a pretty small gripe. Touch-screen displays, mounted throughout the ship, were a fantastic aid to us getting around.